Lenexa is a city in Johnson County, Kansas, United States, and part of the Kansas City Metropolitan Area. As of the 2010 census, the city population was 48,190. It is bordered by the cities of Shawnee to the north, Overland Park to the east, De Soto to the west and Olathe to the south. In 1857, twelve years before the town of Lenexa was platted, James Butler Hickokstaked a claim on 160 acres (0.65km2) at what is now the corner of 83rd and Clare Road. At about the same time, a census of the Shawnee Indians living in the area was being taken. One of the residents was listed as “Na-Nex-Se Blackhoof,” the widow of Chief Blackhoof, who was the second signer of the 1854 treaty that ceded 1,600,000 acres (6,500km2) of the Kansas Shawnee Indian reservation to the U.S. government. A few miles east in Westport, Missouri, was the start of the Old Santa Fe Trail. It meandered through the southeast part of Lenexa on its way to Santa Fe, New Mexico.